JPS5850638B2 - detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition with improved redeposition prevention properties.

More specifically, the present invention relates to a detergent composition that has improved redeposition prevention properties by using a reaction product obtained by reacting a protein hydrolyzate with a glycidyl trialkylammonium salt or the like as a redeposition prevention agent.

Detergent compositions generally consist of surfactants, builders, organic chelating agents, redeposition prevention agents, foam control agents, fragrances, etc. Among these, surfactants account for a larger proportion than surfactants; Builders play an important role in enhancing the action of agents.

This builder includes condensed polyphosphates, carbonates, sulfates,
There are inorganic builders such as silicates and borates, and organic builders such as aminopolycarboxylate and polycarboxylate.

These builders generally have the effect of surfactants, that is, the effect of improving or enhancing detergency.

Other functions such as anti-grey or anti-soil redeposition properties are lacking.

Here, the anti-gray property is the ability to prevent dirt that has been separated from the cleaning cloth and dispersed into the solution from adhering to the cleaning cloth again.

The detergent composition has poor dirt decomposition properties, and if dirt re-deposit on the washed cloth, the washed cloth will appear gray and give an unfavorable impression to the user, so re-deposition prevention agents are usually added. be done.

Known examples of such anti-redeposition agents include natural products such as cellulose and gelatin, semi-synthetic products such as carboxymethylcellulose, and polyanionic polymers that are copolymerizable olefin polymers such as acrylic acid, methacrylic acid, and maleic acid. ing.

Among these, the most important one is carboxymethyl cellulose, which has the advantage of being much superior to the synthetic polymers described above in terms of anti-redeposition agent, and moreover, it can be obtained at a lower cost.

However, carboxymethyl cellulose, as well as synthetic polymers, mainly exhibits an effective anti-redeposition effect on cellulose fibers, and is said to have an extremely low effect on synthetic fibers such as polyester, polyamide, polyolefin, etc. There are drawbacks.

This drawback is particularly noticeable when white fibers made of synthetic fibers or white fibers made of a blend or blend of synthetic fibers and cellulose fibers are washed.

The present inventors conducted extensive research to solve the drawbacks of conventionally used anti-redeposition agents, and found that protein hydrolysates and glycidyl triplekylammonium salts or 3-logeno-2-hydroxy It was discovered that a reaction product having a quaternary nitrogen content of 2 to 5% by weight obtained by the reaction with a propyltrialkylammonium salt has an extremely high ability to prevent redeposition, leading to the completion of the present invention.

That is, the present invention provides a detergent composition comprising a surfactant, a builder, and a conventional auxiliary agent, in which a protein hydrolyzate and a glycidyl triplekylammonium salt or a 3-halogeno-2-hydroxypropyltrialkylammonium salt are used as a redeposition prevention agent. The present invention provides a detergent composition characterized by containing a reaction product having a quaternary nitrogen content of 2 to 5% by weight, which is obtained by reacting the following.

The surfactants used in the present invention include, for example, alkylbenzene sulfonates, Clo-C2o olefin sulfone 1'N alcohol sulfates, α-sulfo fatty acid esters, anionic surfactants such as soaps, alcohol ethoxylates, alkylphenol ethoxylates, etc. , nonionic surfactants such as fatty acid esters of polysaccharides, imidacillin type and alkyl betaine type amphoteric surfactants.

Builders include inorganic builders such as condensed polyphosphates, carbonates, sulfates, silicates, and borates, and organic builders such as aminopolycarboxylate and polycarboxylic acids, as described above. They can be selected and used as appropriate depending on the purpose of use.

Next, in the present invention, the protein hydrolyzate that is the raw material for the redeposition prevention agent is one obtained by hydrolyzing natural proteins such as collagen, keratin, fibroin, and casein using enzymes, or by hydrolyzing natural proteins such as collagen, keratin, fibroin, and casein using an acid or alkali. Decomposed oligopeptides or polypeptides with a molecular weight in the range of 100 to 50,000 are suitable.

Examples of the glycidyltrialkylammonium salts to be reacted with this hydrolyzate include glycidyltrimethylammonium chloride, glycidyltriethylammonium chloride, glycidyldimethylethylammonium chloride, glycidylmethyldiethylammonium chloride, glycidyltriprobylammonium chloride,
Glycidylmethylethylpropylammonium chloride and corresponding bromides, iosites, and the like can be mentioned.

In addition, examples of 3-halogeno-2-hydroxypropyltrimethylammonium salt include 3chloro-2-hydroxypropyltrimethylammonium chloride, 3
-Chloro-2-hydroxypropyltriethylammonium chloride, 3-chloro-2-hydroxypropyldimethylethylammonium chloride, 3-chloro-2-hydroxypropylmethyldiethylammonium chloride, 3-chloro-2-hydroxypropyltriprobylammonium chloride, 3 -chloro-2hydroxypropylmethylethylpropylammonium chloride and the corresponding bromides, iosites, and the like.

The reaction of a protein hydrolyzate with a glycidyltrialkylammonium salt or a 3-halogeno-2-hydroxypropyltrialkylammonium salt is carried out in the presence of an alkaline catalyst such as sodium hydroxide. This is carried out by adding a glycidyl trialkylammonium salt solution or a 3-halogeno-2-hydroxypropyl trialkylammonium salt solution to the solution or suspension, and after heating the reaction, the reaction mixture is neutralized with an acid such as hydrochloric acid.

When a hydrophilic solvent such as acetone is added to the reaction mixture thus obtained, the cationically modified peptide precipitates as a white solid, which is collected and dried.

In this case, it is necessary to carry out the reaction under conditions such that the quaternary nitrogen content of the cationically modified peptide is in the range of 2 to 5% by weight.

If the quaternary nitrogen content is less than 2% by weight, the redeposition prevention ability will be insufficient, and even if it exceeds 5% by weight, the redeposition prevention ability will not improve as much as expected and will be economically disadvantageous. It doesn't work.

The detergent composition of the present invention has the above-mentioned components as main components, but depending on the purpose of use of the detergent, auxiliary agents such as organic chelating agents, foam control agents, fragrances, etc. may be added in addition to these.

A powder, liquid or paste detergent is prepared by blending the detergent composition components as described above.

In this case, the amounts of each component can be the same as those commonly used in this field, but in order to make the redeposition prevention ability most effective, the cationically modified peptide described above must be added to the detergent composition. It is used in an amount of 0.1 to 5% by weight based on the total weight.

The detergent formulated in this manner contains synthetic fibers such as polyamide, polyester, and polyolefin, and cellulose,
Significantly improves the cleaning action of natural fibers such as regenerated cellulose.

In addition, when cleaning natural fibers such as cellulose and regenerated cellulose, in addition to the cationic modified peptide as a re-deposition prevention agent, carboxymethyl cellulose can be added in an amount of about 0.1 to 5% by weight based on the detergent composition for further cleaning. The effect can be improved.

Next, the present invention will be explained in more detail with reference to Examples, but first, a test method for redeposition prevention ability will be described.

Two test methods were used: the resoposition method and the deposition method as described below.

(4) Resoposition method This method is a method in which a soiled cloth and a white test cloth are washed in the same washing bath.

Various cotton, polyester, polyamide, and cotton-polyester blend cloths were used as the soiled cloth and the test white cloth.

The cleaning conditions were temperature: 25°C, hardness: 3°dH.

Bath ratio: 30 times, detergent concentration: 20.2%, amount of dirt: 0.5%
o, w, t (artificial dirt) soiled cloth reflectance: 42±2%, device rotation speed: 120 r, p, m, washing time: 10 minutes, rinsing time: 3 minutes.

Under these conditions, the dirty cloth and the test white cloth were washed in the same washing bath and then dried, and the white cloth and the new dirty cloth were washed again, and this operation was repeated 5 times.

Thereafter, the reflectance was measured using a photoelectric reflectometer (manufactured by Carl Zeiss), and the difference (JR) from the reflectance of the original curved cloth was determined using the following formula, and this was defined as the degree of recontamination.

JR=Ro-Ro; test white cloth reflectance before washing; test white cloth reflectance after washing (B) Deposition method In this method, the test white cloth is washed in a bath in which dirt is present.

The test white cloth was made of cotton, similar to that used in the resoposition method.
Polyester, polyamide, and cotton-polyester blend fabrics were used.

Washing conditions: temperature: 25°C, hardness: 3°dH1, detergent concentration: 0
．． 2%, amount of dirt: 0.3 S' (artificial dirt), number of rotations of the device: 120 r, pom, cleaning time: 1° minute.

The test white cloth was washed under these conditions and then dried, and the white cloth was washed again with a new washing bath, and this operation was repeated five times.

Thereafter, the difference (, (R)) between the reflectance and the original curved cloth was determined in the same manner as in the case of the resoposition method.

The following artificial stains were used.

The organic dirt shown in the table below was melted at 70°C and stirred to make it homogeneous, then the clay and carbon flank shown in the table were added, further stirred, and allowed to cool to room temperature.

Example 1 100.5z of protein hydrolyzate (manufactured by Croda, trade name "Krotin A") was dispersed and dissolved in 1001 of water, 13.3P of a 15% by weight aqueous sodium hydroxide solution was added thereto, and further glycidyl trimethyl Ammonium chloride 150. OS' was dissolved in water and added.

Next, it was heated to 50°C, and once it reached 50°C, it was maintained at this temperature for 5 hours to cause a reaction.

After the reaction was completed, 2.3 g of hydrochloric acid was added to neutralize the mixture, and after keeping at room temperature for 1 hour, acetone was added to cause reprecipitation, followed by filtration and drying to obtain powder of cationically modified peptide.

The nitrogen content of this product is 12.35%, and the chlorine content is 1
The quaternary nitrogen content calculated from the nitrogen content of the raw material was 3.91%.

Using the cationically modified peptide thus obtained, the ability to prevent redeposition was measured using a detergent having the composition shown below.

Table 1 shows the results. Cleaning composition Linear alkylbenzene sulfonate; 13% polypolysethylene C8-15 alcohol;
, 15 Alcohol linear chain rate: 50% or more, 100-14) Sodium silicate Sodium tripolyphosphate Redeposition inhibitor Cation modified peptide (CP); 12; 20; O~5 and hycarboxymethyl cellulose (CMC) Glauber's salt; From the results in Table 1, it can be seen that the cationically modified peptide redeposition prevention agent of the present invention is superior to carboxymethyl cellulose for all types of fibers.

Example 2 Using the cationically modified peptide obtained in Example 1, the ability to prevent redeposition was measured using a detergent having the following composition.

Table 2 shows the results. Cleaning composition α-olefin sulfonate; 13%*Polyoxyethylene C8~, 5 alcohol; ether (C8
, 15 Alcohol linear chain rate: 50% or more, ¥-14) Sodium silicate sodium tripolyphosphate: 20 Redeposition prevention agent; O ~ 5 Cation modified peptide (CP) and hycarboxymethyl cellulose (CMC) Glauber's salt: No\Funsu No. From the results in Table 2, it can be seen that the cationically modified peptide (CP) redeposition prevention agent of the present invention is superior to carboxymethyl cellulose (CMC) for all types of fibers.

Example 3 Using the cationically modified peptide obtained in Example 1, the ability to prevent redeposition was measured using a detergent having the following composition.

Table 3 shows the results. Cleaning composition linear alkylbenzene sulfonate; 1o% CI2-1
．． Alcohol sulfate, 3-polyoxyethylene C8-15 alconyl ether (C8-15 alcohol linear chain ratio: 50% or more, lower-14) Sodium silicate Sodium tripolyphosphate redeposition prevention agent; 12; 20 0, 1 and cation modification Peptide (CP) and Carboxymethyl Cellulose (CMC) Glauber's Salt: From the results in Balance Table 3, it is clear that the cationically modified peptide redeposition prevention agent of the present invention is superior to carboxymethyl cellulose.

Example 4 Using the same cationically modified peptide as in Example 1, the ability to prevent redeposition was measured using a liquid detergent having the following composition.

Table 4 shows the results. Cleaning composition Linear alkylbenzene sulfonate; 18% polyoxyethylene lauryl ether; 25 l (lower-14) Soap; 3 Redeposition prevention agent
; 0, 0.5 and 1 Cation modified peptide (CP) and hycarboxymethyl cellulose (CMC); From the results in Balance Table 4, it was found that cation modified peptide has a better redeposition prevention effect than carboxymethyl cellulose. I understand.

Claims (1)

[Scope of Claims] 1. A detergent composition comprising a surfactant, a builder and a conventional auxiliary agent, which contains a protein hydrolyzate and a glycidyl trialkylammonium salt or 3.
- Quaternary nitrogen content obtained by reacting with halogeno-2-hydroxypropyltrialkylammonium salt 2
A detergent composition characterized in that it contains ~5% by weight of a reaction product. 2 Hydrolysis of protein has a molecular weight of 100-5000
The detergent composition according to claim 1, which is a peptide of 0. 3. Claim No. 3, wherein the glycidyl trialkylammonium salt is glycidyl trimethyl ammonium halide, glycidyl triethylammonium halide, glycidyl dimethylethylammonium halide, glycidyl methyl diethylammonium halide, glycidyl tripropylammonium halide, or glycidyl methylethylpropylammonium halide. The detergent composition according to item 1. 43-halogeno-2-hydroxypropyl triplekylammonium salt is 3-chloro-2-hydroxypropyltrimethylammonium halide, 3-chloro-2-hydroxypropyltriethylammonium halide, 3
-chloro-2-hydroxypropyldimethylethylammonium halide, 3-chloro-2-hydroxypropylmethyldiethylammonium halide, 3-chloro-
The detergent composition according to claim 1, which is 2-hydroxypropyl tripropylammonium halide or 3-chloro-2-hydroxypropylmethylethylpropylammonium halide. 5 The content of anti-redeposition agent is 0 based on the total weight of the detergent composition.
．． The detergent composition according to claim 1, wherein the amount is 1 to 5% by weight.